[mythtv] Segfault with 0.15
Andrew Ingram
adingram at clara.co.uk
Wed Jun 2 16:44:16 EDT 2004
I wrote to the users list shortly after 0.15 came out about a segfault in
MythMusic when scanning music.
I have just got back from a business trip and have been able to look into it
some more. I upgraded to 0.15.1 just in case it was fixed. Anyway, to recap:
Very simple to produce:
Settings->MythMusic->Scan for New Music
*BANG*
However, I did notice that doing:
Music->Scan for New Music
does NOT segfault !!!
The gdb trace is below. If I can help any more, just ask.
Regards,
Andrew
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This GDB was configured as "i386-linux"...
(gdb) handle SIGPIPE nostop
Signal Stop Print Pass to program Description
SIGPIPE No Yes Yes Broken pipe
(gdb) run
Starting program: /usr/local/bin/mythfrontend
[New Thread 1101094880 (LWP 1790)]
2004-06-02 21:33:17 mythfrontend version: 0.15.20040525-1 www.mythtv.org
2004-06-02 21:33:17 Enabled verbose msgs : important general
2004-06-02 21:33:17 Registering Internal as a media playback plugin.
2004-06-02 21:33:17 Registering MythDVD DVD Media Handler as a media handler
2004-06-02 21:33:17 Registering MythDVD VCD Media Handler as a media handler
Detaching after fork from child process 1795.
Failed to run 'cdrecord --scanbus'
2004-06-02 21:33:18 Registering MythMusic Media Handler as a media handler
2004-06-02 21:33:18 Key [,[,F10 is already bound in context Stream.
[New Thread 1142852560 (LWP 1796)]
[New Thread 1152383952 (LWP 1797)]
Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread 1101094880 (LWP 1790)]
0x42074b4a in AllMusic::resync() (this=0x1f) at metadata.cpp:490
490 done_loading = false;
(gdb)
(gdb) thread apply all bt full
Thread 1 (Thread 1101094880 (LWP 1790)):
#0 0x42074b4a in AllMusic::resync() (this=0x1f) at metadata.cpp:490
aquery = {static null = {static null = <same as static member of an
already seen type>, d = 0x81d0ff8,
static shared_null = 0x81d0ff8}, d = 0x82539f8, static shared_null =
0x81d0ff8}
filename = {static null = {static null = <same as static member of
an already seen type>, d = 0x81d0ff8,
static shared_null = 0x81d0ff8}, d = 0x4106ffc8, static shared_null =
0x81d0ff8}
startdir = {static null = {static null = <same as static member of
an already seen type>, d = 0x81d0ff8,
static shared_null = 0x81d0ff8}, d = 0x82539f8, static shared_null =
0x81d0ff8}
query = <incomplete type>
an_iterator = {<QGListIterator> = {list = 0x8238a98, curNode =
0x421279bc}, <No data fields>}
map_add = (Metadata *) 0xbfffc3e0
#1 0x42063c73 in MusicCallback(void*, QString&) (data=0xbfffcf10,
selection=@0x8252a44) at main.cpp:307
mdata = (MusicData *) 0xbfffcf10
sel = {static null = {static null = <same as static member of an
already seen type>, d = 0x81d0ff8,
static shared_null = 0x81d0ff8}, d = 0x8215340, static shared_null =
0x81d0ff8}
#2 0x4084d2bd in ThemedMenuPrivate::handleAction(QString const&)
(this=0x8252948, action=@0x8238b54) at themedmenu.cpp:2108
No locals.
#3 0x4084b7a3 in ThemedMenuPrivate::keyPressHandler(QKeyEvent*)
(this=0x8252948, e=0xbfffcb10) at themedmenu.cpp:1923
action = {static null = {static null = <same as static member of an
already seen type>, d = 0x81d0ff8,
static shared_null = 0x81d0ff8}, d = 0x82203e8, static shared_null =
0x81d0ff8}
i = 0
lastbutton = (ThemedButton *) 0x8238b18
oldrow = 0
handled = true
actions = {<QValueList<QString>> = {sh = 0x825fee8}, <No data
fields>}
#4 0x4084e6e0 in ThemedMenu::keyPressEvent(QKeyEvent*) (this=0x8256190,
e=0xbfffcb10) at themedmenu.cpp:2294
No locals.
#5 0x40ce109f in QWidget::event(QEvent*) () from /usr/lib/libqt-mt.so.3
No symbol table info available.
#6 0x40c5a26c in QApplication::internalNotify(QObject*, QEvent*) () from
/usr/lib/libqt-mt.so.3
No symbol table info available.
#7 0x40c59d80 in QApplication::notify(QObject*, QEvent*) () from
/usr/lib/libqt-mt.so.3
No symbol table info available.
#8 0x40bfa68d in QETWidget::translateKeyEvent(_XEvent const*, bool) () from
/usr/lib/libqt-mt.so.3
No symbol table info available.
#9 0x40bf6bf2 in QApplication::x11ProcessEvent(_XEvent*) () from
/usr/lib/libqt-mt.so.3
No symbol table info available.
#10 0x40c0b842 in QEventLoop::processEvents(unsigned) () from
/usr/lib/libqt-mt.so.3
No symbol table info available.
#11 0x40c6b8af in QEventLoop::enterLoop() () from /usr/lib/libqt-mt.so.3
No symbol table info available.
#12 0x40c5a4f0 in QApplication::enter_loop() () from /usr/lib/libqt-mt.so.3
No symbol table info available.
#13 0x408a9d77 in MythDialog::exec() (this=0x8256190) at mythdialogs.cpp:787
res = 1108507068
#14 0x4206406d in runMenu(MusicData*, QString) (mdata=0xbfffcf10,
which_menu=
{static null = {static null = <same as static member of an already
seen type>, d = 0x81d0ff8, static shared_null = 0x81d0ff8}, d = 0x823a098,
static shared_null = 0x81d0ff8}) at main.cpp:340
themedir = {static null = {static null = <same as static member of
an already seen type>, d = 0x81d0ff8,
static shared_null = 0x81d0ff8}, d = 0x821ef68, static shared_null =
0x81d0ff8}
diag = (class ThemedMenu *) 0x8256190
#15 0x42067296 in mythplugin_config () at main.cpp:518
translator = <incomplete type>
mdata = {paths = {static null = {static null = <same as static
member of an already seen type>, d = 0x81d0ff8,
static shared_null = 0x81d0ff8}, d = 0x8253f90, static shared_null =
0x81d0ff8}, startdir = {static null = {
static null = <same as static member of an already seen type>, d =
0x81d0ff8, static shared_null = 0x81d0ff8},
d = 0x8234558, static shared_null = 0x81d0ff8}, all_playlists =
0x404f12a0, all_music = 0x1f, trans = 0x8255cd8}
#16 0x4089fae1 in MythPlugin::config() (this=0x82b0970) at mythplugin.cpp:50
rfunc = 0x42066b2a <mythplugin_config>
#17 0x408a0c0b in MythPluginManager::config_plugin(QString const&)
(this=0x8215698, plugname=@0xbfffd180) at mythplugin.cpp:180
newname = {static null = {static null = <same as static member of an
already seen type>, d = 0x81d0ff8,
static shared_null = 0x81d0ff8}, d = 0x823a100, static shared_null =
0x81d0ff8}
#18 0x4084cefa in ThemedMenuPrivate::handleAction(QString const&)
(this=0x8233fa8, action=@0x8257504) at themedmenu.cpp:2084
rest = {static null = {static null = <same as static member of an
already seen type>, d = 0x81d0ff8,
static shared_null = 0x81d0ff8}, d = 0x822c8e0, static shared_null =
0x81d0ff8}
pmanager = (MythPluginManager *) 0x8215698
#19 0x4084b7a3 in ThemedMenuPrivate::keyPressHandler(QKeyEvent*)
(this=0x8233fa8, e=0xbfffd6d0) at themedmenu.cpp:1923
action = {static null = {static null = <same as static member of an
already seen type>, d = 0x81d0ff8,
static shared_null = 0x81d0ff8}, d = 0x8215200, static shared_null =
0x81d0ff8}
i = 0
lastbutton = (ThemedButton *) 0x82574c8
oldrow = 3
handled = true
actions = {<QValueList<QString>> = {sh = 0x820a5e0}, <No data
fields>}
#20 0x4084e6e0 in ThemedMenu::keyPressEvent(QKeyEvent*) (this=0x82347a0,
e=0xbfffd6d0) at themedmenu.cpp:2294
No locals.
#21 0x40ce109f in QWidget::event(QEvent*) () from /usr/lib/libqt-mt.so.3
No symbol table info available.
#22 0x40c5a26c in QApplication::internalNotify(QObject*, QEvent*) () from
/usr/lib/libqt-mt.so.3
No symbol table info available.
#23 0x40c59d80 in QApplication::notify(QObject*, QEvent*) () from
/usr/lib/libqt-mt.so.3
No symbol table info available.
#24 0x40bfa68d in QETWidget::translateKeyEvent(_XEvent const*, bool) () from
/usr/lib/libqt-mt.so.3
No symbol table info available.
#25 0x40bf6bf2 in QApplication::x11ProcessEvent(_XEvent*) () from
/usr/lib/libqt-mt.so.3
No symbol table info available.
#26 0x40c0b842 in QEventLoop::processEvents(unsigned) () from
/usr/lib/libqt-mt.so.3
No symbol table info available.
#27 0x40c6b8af in QEventLoop::enterLoop() () from /usr/lib/libqt-mt.so.3
No symbol table info available.
#28 0x40c5a4f0 in QApplication::enter_loop() () from /usr/lib/libqt-mt.so.3
No symbol table info available.
#29 0x408a9d77 in MythDialog::exec() (this=0x82347a0) at mythdialogs.cpp:787
res = 1082825984
#30 0x08068166 in RunMenu(QString) (themedir=
{static null = {static null = <same as static member of an already
seen type>, d = 0x81d0ff8, static shared_null = 0x81d0ff8}, d = 0x82ae440,
static shared_null = 0x81d0ff8}) at main.cpp:529
exitstatus = 0
#31 0x0806c805 in main (argc=1, argv=0xbfffde84) at main.cpp:988
lcd_host = {static null = {static null = <same as static member of
an already seen type>, d = 0x81d0ff8,
static shared_null = 0x81d0ff8}, d = 0x82152b8, static shared_null =
0x81d0ff8}
lcd_port = 13666
a = <incomplete type>
logfile = {static null = {static null = <same as static member of an
already seen type>, d = 0x81d0ff8,
static shared_null = 0x81d0ff8}, d = 0x81f7500, static shared_null =
0x81d0ff8}
verboseString = {static null = {static null = <same as static member
of an already seen type>, d = 0x81d0ff8,
static shared_null = 0x81d0ff8}, d = 0x81f7518, static shared_null =
0x81d0ff8}
pluginname = {static null = {static null = <same as static member of
an already seen type>, d = 0x81d0ff8,
static shared_null = 0x81d0ff8}, d = 0x81f7530, static shared_null =
0x81d0ff8}
finfo = {fn = {static null = {static null = <same as static member
of an already seen type>, d = 0x81d0ff8,
static shared_null = 0x81d0ff8}, d = 0x81f7588, static shared_null =
0x81d0ff8}, fic = 0x0, cache = true, symLink = false}
binname = {static null = {static null = <same as static member of an
already seen type>, d = 0x81d0ff8,
static shared_null = 0x81d0ff8}, d = 0x81f75a0, static shared_null =
0x81d0ff8}
logfd = -1
fileprefix = {static null = {static null = <same as static member of
an already seen type>, d = 0x81d0ff8,
static shared_null = 0x81d0ff8}, d = 0x81f7678, static shared_null =
0x81d0ff8}
dir = <incomplete type>
db = (struct QSqlDatabase *) 0x820a960
themename = {static null = {static null = <same as static member of
an already seen type>, d = 0x81d0ff8,
static shared_null = 0x81d0ff8}, d = 0x82aff08, static shared_null =
0x81d0ff8}
randomtheme = false
themedir = {static null = {static null = <same as static member of
an already seen type>, d = 0x81d0ff8,
static shared_null = 0x81d0ff8}, d = 0x82ae440, static shared_null =
0x81d0ff8}
switchMode = false
mainWindow = (class MythMainWindow *) 0x82adc98
pmanager = (MythPluginManager *) 0x8215698
mon = (class MediaMonitor *) 0x0
exitstatus = 1
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